def Dog():
    pass


def Animal():
    pass


class Animal:
    name = 'animal'
    def shout(self):
        print('animal shout')

    animal = Animal()
    print(animal,name)
    animal.shout()

    class Dog:
        name = 'dog'

        def eat(self):
            print('dog eat')

            dog = Dog()
            print(dog.name)
            dog.eat()

            dog1= Dog()
            print(dog1.name)
            print(Dog.name)

            dog1.name = 'ddddd1'
            print(dog1.name)
            print(Dog.name)

            Dog.name = '__dd'
            print(dog1.name)
            print(Dog.name)
            print('---------------')
            dog2 = Dog()
            print(dog2.name)